Procedure Participants will be assessed, recruited and randomised as detailed previously. All participants will be instructed in the same eccentric exercise technique as per previous literature (Alfredson et al 1998). Advice concerning progression, and exercising to pain will be consistent across groups with that recommended by Alfredson et al (1998). All participants will also receive the same written instructions on how to perform and progress exercise as well as a simple exercise diary to record the number of repetitions actually completed per day. During the initial consultation the data collection sheet will be completed where appropriate. At the end of the initial consultation participating therapists will phone Stirling Royal Infirmary physiotherapy department where the recruited secretary will inform the patient directly the number of exercises to do a day (as part of the randomisation process). A follow-up appointment will be arranged in three weeks.